/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 19:02:08,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 19:02:08,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 19:02:08,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 19:02:08,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 19:02:08,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 19:02:08,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 19:02:08,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 19:02:08,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 19:02:08,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 19:02:08,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 19:02:08,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 19:02:08,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 19:02:08,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 19:02:08,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 19:02:08,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 19:02:08,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 19:02:08,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 19:02:08,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 19:02:08,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 19:02:08,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 19:02:08,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 19:02:08,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 19:02:08,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 19:02:08,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 19:02:08,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 19:02:08,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 19:02:08,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 19:02:08,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 19:02:08,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-12-12 19:02:08,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 19:02:08,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 19:02:08,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 19:02:08,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 19:02:08,137 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 19:02:08,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 19:02:08,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 19:02:08,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 19:02:08,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 19:02:08,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 19:02:08,140 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 19:02:08,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 19:02:08,141 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 19:02:08,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 19:02:08,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 19:02:08,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 19:02:08,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 19:02:08,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 19:02:08,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 19:02:08,142 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 19:02:08,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 19:02:08,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 19:02:08,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 19:02:08,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 19:02:08,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 19:02:08,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 19:02:08,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 19:02:08,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:02:08,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 19:02:08,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 19:02:08,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 19:02:08,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 19:02:08,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 19:02:08,144 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 19:02:08,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 19:02:08,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 19:02:08,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 19:02:08,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 19:02:08,477 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 19:02:08,477 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 19:02:08,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2022-12-12 19:02:09,712 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 19:02:10,000 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 19:02:10,000 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2022-12-12 19:02:10,009 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29cc2f62f/7a7f0e9c53a54fb9a334289d889da068/FLAG7b2bdb39a [2022-12-12 19:02:10,022 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29cc2f62f/7a7f0e9c53a54fb9a334289d889da068 [2022-12-12 19:02:10,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 19:02:10,025 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 19:02:10,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 19:02:10,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 19:02:10,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 19:02:10,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8b90e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10, skipping insertion in model container [2022-12-12 19:02:10,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 19:02:10,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 19:02:10,194 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2022-12-12 19:02:10,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:02:10,377 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 19:02:10,390 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2022-12-12 19:02:10,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:02:10,458 INFO L208 MainTranslator]: Completed translation [2022-12-12 19:02:10,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10 WrapperNode [2022-12-12 19:02:10,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 19:02:10,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 19:02:10,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 19:02:10,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 19:02:10,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,526 INFO L138 Inliner]: procedures = 162, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2022-12-12 19:02:10,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 19:02:10,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 19:02:10,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 19:02:10,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 19:02:10,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,561 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 19:02:10,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 19:02:10,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 19:02:10,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 19:02:10,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10" (1/1) ... [2022-12-12 19:02:10,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:02:10,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:02:10,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 19:02:10,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 19:02:10,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 19:02:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 19:02:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 19:02:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 19:02:10,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 19:02:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-12 19:02:10,626 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-12 19:02:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 19:02:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 19:02:10,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 19:02:10,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 19:02:10,627 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 19:02:10,735 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 19:02:10,737 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 19:02:10,990 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 19:02:10,997 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 19:02:10,997 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 19:02:10,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:02:10 BoogieIcfgContainer [2022-12-12 19:02:10,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 19:02:11,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 19:02:11,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 19:02:11,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 19:02:11,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 07:02:10" (1/3) ... [2022-12-12 19:02:11,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e107804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:02:11, skipping insertion in model container [2022-12-12 19:02:11,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:02:10" (2/3) ... [2022-12-12 19:02:11,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e107804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:02:11, skipping insertion in model container [2022-12-12 19:02:11,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:02:10" (3/3) ... [2022-12-12 19:02:11,032 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2022-12-12 19:02:11,048 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 19:02:11,049 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-12 19:02:11,049 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 19:02:11,112 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-12 19:02:11,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 131 transitions, 270 flow [2022-12-12 19:02:11,193 INFO L130 PetriNetUnfolder]: 4/130 cut-off events. [2022-12-12 19:02:11,194 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 19:02:11,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 130 events. 4/130 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2022-12-12 19:02:11,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 131 transitions, 270 flow [2022-12-12 19:02:11,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 117 transitions, 237 flow [2022-12-12 19:02:11,204 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 19:02:11,237 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 117 transitions, 237 flow [2022-12-12 19:02:11,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 117 transitions, 237 flow [2022-12-12 19:02:11,270 INFO L130 PetriNetUnfolder]: 3/117 cut-off events. [2022-12-12 19:02:11,270 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:02:11,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 117 events. 3/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 107 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2022-12-12 19:02:11,286 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 117 transitions, 237 flow [2022-12-12 19:02:11,286 INFO L226 LiptonReduction]: Number of co-enabled transitions 3102 [2022-12-12 19:02:15,134 INFO L241 LiptonReduction]: Total number of compositions: 97 [2022-12-12 19:02:15,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 19:02:15,153 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3180cd6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 19:02:15,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-12 19:02:15,157 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2022-12-12 19:02:15,157 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:02:15,157 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:15,158 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-12 19:02:15,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:02:15,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:15,162 INFO L85 PathProgramCache]: Analyzing trace with hash 431882463, now seen corresponding path program 1 times [2022-12-12 19:02:15,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:15,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264000117] [2022-12-12 19:02:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:15,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:02:15,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:15,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264000117] [2022-12-12 19:02:15,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264000117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:15,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:15,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 19:02:15,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649579716] [2022-12-12 19:02:15,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:15,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-12 19:02:15,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:15,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-12 19:02:15,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-12 19:02:15,344 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2022-12-12 19:02:15,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 113 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:15,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:15,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2022-12-12 19:02:15,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:15,525 INFO L130 PetriNetUnfolder]: 336/830 cut-off events. [2022-12-12 19:02:15,525 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 19:02:15,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 830 events. 336/830 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4562 event pairs, 336 based on Foata normal form. 25/609 useless extension candidates. Maximal degree in co-relation 1538. Up to 713 conditions per place. [2022-12-12 19:02:15,535 INFO L137 encePairwiseOnDemand]: 52/55 looper letters, 40 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2022-12-12 19:02:15,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 187 flow [2022-12-12 19:02:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-12 19:02:15,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-12 19:02:15,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 67 transitions. [2022-12-12 19:02:15,546 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6090909090909091 [2022-12-12 19:02:15,549 INFO L295 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2022-12-12 19:02:15,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 52 transitions, 187 flow [2022-12-12 19:02:15,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 52 transitions, 187 flow [2022-12-12 19:02:15,554 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 187 flow [2022-12-12 19:02:15,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:15,554 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:15,554 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-12 19:02:15,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 19:02:15,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:02:15,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:15,556 INFO L85 PathProgramCache]: Analyzing trace with hash 431881581, now seen corresponding path program 1 times [2022-12-12 19:02:15,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:15,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866230400] [2022-12-12 19:02:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:15,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:02:15,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:15,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866230400] [2022-12-12 19:02:15,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866230400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:15,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:15,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 19:02:15,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958053726] [2022-12-12 19:02:15,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:15,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:02:15,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:02:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:02:15,769 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2022-12-12 19:02:15,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:15,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:15,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2022-12-12 19:02:15,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:15,906 INFO L130 PetriNetUnfolder]: 329/813 cut-off events. [2022-12-12 19:02:15,907 INFO L131 PetriNetUnfolder]: For 78/86 co-relation queries the response was YES. [2022-12-12 19:02:15,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 813 events. 329/813 cut-off events. For 78/86 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4420 event pairs, 109 based on Foata normal form. 6/594 useless extension candidates. Maximal degree in co-relation 2199. Up to 691 conditions per place. [2022-12-12 19:02:15,912 INFO L137 encePairwiseOnDemand]: 49/55 looper letters, 49 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2022-12-12 19:02:15,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 335 flow [2022-12-12 19:02:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:02:15,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:02:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2022-12-12 19:02:15,924 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2022-12-12 19:02:15,925 INFO L295 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2022-12-12 19:02:15,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 63 transitions, 335 flow [2022-12-12 19:02:15,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 63 transitions, 335 flow [2022-12-12 19:02:15,929 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 335 flow [2022-12-12 19:02:15,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:15,929 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:15,930 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:02:15,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 19:02:15,930 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:02:15,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1615793925, now seen corresponding path program 1 times [2022-12-12 19:02:15,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:15,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7279468] [2022-12-12 19:02:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:15,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:02:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:16,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7279468] [2022-12-12 19:02:16,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7279468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:16,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:16,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:02:16,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243475508] [2022-12-12 19:02:16,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:16,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:02:16,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:16,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:02:16,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:02:16,062 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 55 [2022-12-12 19:02:16,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:16,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:16,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 55 [2022-12-12 19:02:16,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:16,301 INFO L130 PetriNetUnfolder]: 594/1274 cut-off events. [2022-12-12 19:02:16,302 INFO L131 PetriNetUnfolder]: For 370/370 co-relation queries the response was YES. [2022-12-12 19:02:16,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4550 conditions, 1274 events. 594/1274 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7050 event pairs, 99 based on Foata normal form. 10/955 useless extension candidates. Maximal degree in co-relation 4535. Up to 999 conditions per place. [2022-12-12 19:02:16,317 INFO L137 encePairwiseOnDemand]: 40/55 looper letters, 94 selfloop transitions, 19 changer transitions 0/115 dead transitions. [2022-12-12 19:02:16,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 115 transitions, 833 flow [2022-12-12 19:02:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:02:16,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:02:16,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2022-12-12 19:02:16,322 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6303030303030303 [2022-12-12 19:02:16,324 INFO L295 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2022-12-12 19:02:16,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 115 transitions, 833 flow [2022-12-12 19:02:16,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 115 transitions, 833 flow [2022-12-12 19:02:16,333 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 115 transitions, 833 flow [2022-12-12 19:02:16,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:16,334 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:16,334 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:02:16,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 19:02:16,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:02:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash -882444170, now seen corresponding path program 1 times [2022-12-12 19:02:16,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:16,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841174906] [2022-12-12 19:02:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:02:16,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:16,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841174906] [2022-12-12 19:02:16,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841174906] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:16,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:16,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:02:16,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049091743] [2022-12-12 19:02:16,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:16,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 19:02:16,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:16,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 19:02:16,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 19:02:16,539 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 55 [2022-12-12 19:02:16,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 115 transitions, 833 flow. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:16,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:16,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 55 [2022-12-12 19:02:16,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:16,716 INFO L130 PetriNetUnfolder]: 348/810 cut-off events. [2022-12-12 19:02:16,716 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2022-12-12 19:02:16,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3709 conditions, 810 events. 348/810 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4251 event pairs, 18 based on Foata normal form. 16/618 useless extension candidates. Maximal degree in co-relation 3691. Up to 658 conditions per place. [2022-12-12 19:02:16,721 INFO L137 encePairwiseOnDemand]: 46/55 looper letters, 102 selfloop transitions, 12 changer transitions 3/119 dead transitions. [2022-12-12 19:02:16,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 119 transitions, 1091 flow [2022-12-12 19:02:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:02:16,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:02:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2022-12-12 19:02:16,723 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2022-12-12 19:02:16,723 INFO L295 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2022-12-12 19:02:16,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 119 transitions, 1091 flow [2022-12-12 19:02:16,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 116 transitions, 1061 flow [2022-12-12 19:02:16,728 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 116 transitions, 1061 flow [2022-12-12 19:02:16,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:16,729 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:16,729 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:02:16,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 19:02:16,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:02:16,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash -539170220, now seen corresponding path program 1 times [2022-12-12 19:02:16,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:16,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826712700] [2022-12-12 19:02:16,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:16,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:02:16,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:16,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826712700] [2022-12-12 19:02:16,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826712700] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:16,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:16,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 19:02:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127418914] [2022-12-12 19:02:16,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:16,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:02:16,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:16,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:02:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:02:16,789 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2022-12-12 19:02:16,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 116 transitions, 1061 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:16,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:16,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2022-12-12 19:02:16,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:16,899 INFO L130 PetriNetUnfolder]: 338/784 cut-off events. [2022-12-12 19:02:16,899 INFO L131 PetriNetUnfolder]: For 367/367 co-relation queries the response was YES. [2022-12-12 19:02:16,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4204 conditions, 784 events. 338/784 cut-off events. For 367/367 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4011 event pairs, 78 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 4183. Up to 644 conditions per place. [2022-12-12 19:02:16,904 INFO L137 encePairwiseOnDemand]: 51/55 looper letters, 97 selfloop transitions, 7 changer transitions 1/128 dead transitions. [2022-12-12 19:02:16,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 128 transitions, 1389 flow [2022-12-12 19:02:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:02:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:02:16,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2022-12-12 19:02:16,905 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2022-12-12 19:02:16,906 INFO L295 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2022-12-12 19:02:16,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 128 transitions, 1389 flow [2022-12-12 19:02:16,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 127 transitions, 1387 flow [2022-12-12 19:02:16,912 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 127 transitions, 1387 flow [2022-12-12 19:02:16,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:16,912 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:16,912 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:02:16,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 19:02:16,912 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:02:16,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:16,913 INFO L85 PathProgramCache]: Analyzing trace with hash 295966853, now seen corresponding path program 1 times [2022-12-12 19:02:16,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:16,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454596952] [2022-12-12 19:02:16,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:16,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:02:17,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:17,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454596952] [2022-12-12 19:02:17,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454596952] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:17,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:17,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:02:17,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415806183] [2022-12-12 19:02:17,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:17,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:02:17,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:02:17,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:02:17,023 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2022-12-12 19:02:17,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 127 transitions, 1387 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:17,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:17,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2022-12-12 19:02:17,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:17,146 INFO L130 PetriNetUnfolder]: 274/670 cut-off events. [2022-12-12 19:02:17,146 INFO L131 PetriNetUnfolder]: For 646/646 co-relation queries the response was YES. [2022-12-12 19:02:17,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4072 conditions, 670 events. 274/670 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3333 event pairs, 72 based on Foata normal form. 21/566 useless extension candidates. Maximal degree in co-relation 4048. Up to 561 conditions per place. [2022-12-12 19:02:17,150 INFO L137 encePairwiseOnDemand]: 46/55 looper letters, 79 selfloop transitions, 6 changer transitions 13/119 dead transitions. [2022-12-12 19:02:17,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 119 transitions, 1485 flow [2022-12-12 19:02:17,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 19:02:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 19:02:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2022-12-12 19:02:17,151 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3212121212121212 [2022-12-12 19:02:17,152 INFO L295 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2022-12-12 19:02:17,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 119 transitions, 1485 flow [2022-12-12 19:02:17,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 106 transitions, 1311 flow [2022-12-12 19:02:17,156 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 106 transitions, 1311 flow [2022-12-12 19:02:17,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:17,156 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:17,156 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:02:17,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 19:02:17,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:02:17,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:17,157 INFO L85 PathProgramCache]: Analyzing trace with hash 920279803, now seen corresponding path program 1 times [2022-12-12 19:02:17,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:17,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173226326] [2022-12-12 19:02:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:17,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:02:17,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:17,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173226326] [2022-12-12 19:02:17,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173226326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:17,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:17,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:02:17,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526267828] [2022-12-12 19:02:17,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:17,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:02:17,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:17,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:02:17,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:02:17,274 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 55 [2022-12-12 19:02:17,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 106 transitions, 1311 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:17,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:17,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 55 [2022-12-12 19:02:17,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:17,388 INFO L130 PetriNetUnfolder]: 71/329 cut-off events. [2022-12-12 19:02:17,388 INFO L131 PetriNetUnfolder]: For 450/450 co-relation queries the response was YES. [2022-12-12 19:02:17,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2341 conditions, 329 events. 71/329 cut-off events. For 450/450 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1625 event pairs, 0 based on Foata normal form. 77/362 useless extension candidates. Maximal degree in co-relation 2314. Up to 272 conditions per place. [2022-12-12 19:02:17,391 INFO L137 encePairwiseOnDemand]: 30/55 looper letters, 55 selfloop transitions, 44 changer transitions 29/128 dead transitions. [2022-12-12 19:02:17,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 128 transitions, 1817 flow [2022-12-12 19:02:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:02:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:02:17,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2022-12-12 19:02:17,392 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.36818181818181817 [2022-12-12 19:02:17,392 INFO L295 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2022-12-12 19:02:17,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 128 transitions, 1817 flow [2022-12-12 19:02:17,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 99 transitions, 1435 flow [2022-12-12 19:02:17,395 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 99 transitions, 1435 flow [2022-12-12 19:02:17,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:17,395 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:17,395 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:02:17,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 19:02:17,395 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:02:17,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:17,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1201423811, now seen corresponding path program 1 times [2022-12-12 19:02:17,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:17,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809875463] [2022-12-12 19:02:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:17,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:02:17,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:17,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809875463] [2022-12-12 19:02:17,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809875463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:17,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:17,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:02:17,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585696922] [2022-12-12 19:02:17,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:17,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:02:17,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:17,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:02:17,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:02:17,637 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 55 [2022-12-12 19:02:17,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 99 transitions, 1435 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:17,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:17,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 55 [2022-12-12 19:02:17,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:17,717 INFO L130 PetriNetUnfolder]: 58/228 cut-off events. [2022-12-12 19:02:17,717 INFO L131 PetriNetUnfolder]: For 278/278 co-relation queries the response was YES. [2022-12-12 19:02:17,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 228 events. 58/228 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 918 event pairs, 0 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 1866. Up to 215 conditions per place. [2022-12-12 19:02:17,719 INFO L137 encePairwiseOnDemand]: 51/55 looper letters, 79 selfloop transitions, 7 changer transitions 11/97 dead transitions. [2022-12-12 19:02:17,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 97 transitions, 1605 flow [2022-12-12 19:02:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:02:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:02:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-12-12 19:02:17,720 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.23636363636363636 [2022-12-12 19:02:17,721 INFO L295 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2022-12-12 19:02:17,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 97 transitions, 1605 flow [2022-12-12 19:02:17,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 86 transitions, 1415 flow [2022-12-12 19:02:17,723 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 86 transitions, 1415 flow [2022-12-12 19:02:17,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:17,723 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:17,723 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:02:17,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 19:02:17,724 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:02:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash 815135745, now seen corresponding path program 1 times [2022-12-12 19:02:17,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:17,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254984068] [2022-12-12 19:02:17,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:17,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:02:17,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:17,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254984068] [2022-12-12 19:02:17,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254984068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:17,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:17,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:02:17,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85760412] [2022-12-12 19:02:17,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:17,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 19:02:17,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:17,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 19:02:17,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 19:02:17,879 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 55 [2022-12-12 19:02:17,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 86 transitions, 1415 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:17,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:17,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 55 [2022-12-12 19:02:17,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:17,945 INFO L130 PetriNetUnfolder]: 31/153 cut-off events. [2022-12-12 19:02:17,945 INFO L131 PetriNetUnfolder]: For 172/172 co-relation queries the response was YES. [2022-12-12 19:02:17,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 153 events. 31/153 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 549 event pairs, 0 based on Foata normal form. 11/156 useless extension candidates. Maximal degree in co-relation 1410. Up to 140 conditions per place. [2022-12-12 19:02:17,952 INFO L137 encePairwiseOnDemand]: 49/55 looper letters, 63 selfloop transitions, 22 changer transitions 3/88 dead transitions. [2022-12-12 19:02:17,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 1635 flow [2022-12-12 19:02:17,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:02:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:02:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 44 transitions. [2022-12-12 19:02:17,953 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2 [2022-12-12 19:02:17,954 INFO L295 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2022-12-12 19:02:17,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 88 transitions, 1635 flow [2022-12-12 19:02:17,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 85 transitions, 1575 flow [2022-12-12 19:02:17,958 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 85 transitions, 1575 flow [2022-12-12 19:02:17,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:17,958 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:02:17,958 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:02:17,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 19:02:17,958 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-12-12 19:02:17,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:02:17,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2022130335, now seen corresponding path program 1 times [2022-12-12 19:02:17,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:02:17,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960968948] [2022-12-12 19:02:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:02:17,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:02:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:02:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 19:02:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:02:18,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960968948] [2022-12-12 19:02:18,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960968948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:02:18,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:02:18,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 19:02:18,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782749919] [2022-12-12 19:02:18,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:02:18,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 19:02:18,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:02:18,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 19:02:18,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 19:02:18,104 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2022-12-12 19:02:18,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 85 transitions, 1575 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:18,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:02:18,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2022-12-12 19:02:18,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:02:18,152 INFO L130 PetriNetUnfolder]: 31/143 cut-off events. [2022-12-12 19:02:18,152 INFO L131 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2022-12-12 19:02:18,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 143 events. 31/143 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 498 event pairs, 0 based on Foata normal form. 6/141 useless extension candidates. Maximal degree in co-relation 1431. Up to 130 conditions per place. [2022-12-12 19:02:18,153 INFO L137 encePairwiseOnDemand]: 51/55 looper letters, 0 selfloop transitions, 0 changer transitions 91/91 dead transitions. [2022-12-12 19:02:18,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 1845 flow [2022-12-12 19:02:18,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:02:18,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:02:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2022-12-12 19:02:18,154 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2022-12-12 19:02:18,155 INFO L295 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2022-12-12 19:02:18,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 91 transitions, 1845 flow [2022-12-12 19:02:18,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 19:02:18,156 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 19:02:18,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 19:02:18,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-12 19:02:18,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-12-12 19:02:18,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-12-12 19:02:18,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-12-12 19:02:18,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-12 19:02:18,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 19:02:18,163 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:02:18,165 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 19:02:18,165 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 19:02:18,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 07:02:18 BasicIcfg [2022-12-12 19:02:18,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 19:02:18,169 INFO L158 Benchmark]: Toolchain (without parser) took 8143.45ms. Allocated memory was 176.2MB in the beginning and 292.6MB in the end (delta: 116.4MB). Free memory was 150.5MB in the beginning and 127.4MB in the end (delta: 23.1MB). Peak memory consumption was 139.8MB. Max. memory is 8.0GB. [2022-12-12 19:02:18,169 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 152.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 19:02:18,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.48ms. Allocated memory is still 176.2MB. Free memory was 150.2MB in the beginning and 130.8MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 19:02:18,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.01ms. Allocated memory is still 176.2MB. Free memory was 130.5MB in the beginning and 128.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 19:02:18,172 INFO L158 Benchmark]: Boogie Preprocessor took 37.74ms. Allocated memory is still 176.2MB. Free memory was 128.4MB in the beginning and 127.1MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 19:02:18,172 INFO L158 Benchmark]: RCFGBuilder took 433.99ms. Allocated memory is still 176.2MB. Free memory was 126.8MB in the beginning and 111.0MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-12-12 19:02:18,172 INFO L158 Benchmark]: TraceAbstraction took 7167.02ms. Allocated memory was 176.2MB in the beginning and 292.6MB in the end (delta: 116.4MB). Free memory was 110.0MB in the beginning and 127.4MB in the end (delta: -17.3MB). Peak memory consumption was 99.9MB. Max. memory is 8.0GB. [2022-12-12 19:02:18,174 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 176.2MB. Free memory is still 152.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 432.48ms. Allocated memory is still 176.2MB. Free memory was 150.2MB in the beginning and 130.8MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.01ms. Allocated memory is still 176.2MB. Free memory was 130.5MB in the beginning and 128.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.74ms. Allocated memory is still 176.2MB. Free memory was 128.4MB in the beginning and 127.1MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 433.99ms. Allocated memory is still 176.2MB. Free memory was 126.8MB in the beginning and 111.0MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 7167.02ms. Allocated memory was 176.2MB in the beginning and 292.6MB in the end (delta: 116.4MB). Free memory was 110.0MB in the beginning and 127.4MB in the end (delta: -17.3MB). Peak memory consumption was 99.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 118 PlacesBefore, 56 PlacesAfterwards, 117 TransitionsBefore, 55 TransitionsAfterwards, 3102 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 44 ConcurrentYvCompositions, 0 ChoiceCompositions, 97 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3518, independent: 3227, independent conditional: 3227, independent unconditional: 0, dependent: 291, dependent conditional: 291, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3518, independent: 3227, independent conditional: 0, independent unconditional: 3227, dependent: 291, dependent conditional: 0, dependent unconditional: 291, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3518, independent: 3227, independent conditional: 0, independent unconditional: 3227, dependent: 291, dependent conditional: 0, dependent unconditional: 291, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3518, independent: 3227, independent conditional: 0, independent unconditional: 3227, dependent: 291, dependent conditional: 0, dependent unconditional: 291, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2506, independent: 2409, independent conditional: 0, independent unconditional: 2409, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2506, independent: 2128, independent conditional: 0, independent unconditional: 2128, dependent: 378, dependent conditional: 0, dependent unconditional: 378, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 378, independent: 281, independent conditional: 0, independent unconditional: 281, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 387, independent: 196, independent conditional: 0, independent unconditional: 196, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3518, independent: 818, independent conditional: 0, independent unconditional: 818, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 2506, unknown conditional: 0, unknown unconditional: 2506] , Statistics on independence cache: Total cache size (in pairs): 4110, Positive cache size: 4013, Positive conditional cache size: 0, Positive unconditional cache size: 4013, Negative cache size: 97, Negative conditional cache size: 0, Negative unconditional cache size: 97, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 163 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 277 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 277 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 151 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 770 IncrementalHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 151 mSolverCounterUnsat, 15 mSDtfsCounter, 770 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1575occurred in iteration=9, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 2683 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 732 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 19:02:18,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...